Compound used in breath analysis test for drunken driving
Asked by admin @ in Chemistry viewed by 292 People
The compound used in breath analysis test for drunken driving is pottasium iodide
Asked by admin @ in Chemistry viewed by 292 People
The compound used in breath analysis test for drunken driving is pottasium iodide
Answered by admin @
Answer:
Actually it's not potassium iodide.
Here is the chemical action take place in breath analyser.
When the user exhales into a breath analyzer, any ethanol present in their breath is oxidized to acetic acid at the anode:
CH3CH2OH(g) + H2O(l) → CH3CO2H(l) + 4H+(aq) + 4e−
At the cathode, atmospheric oxygen is reduced:
O2(g) + 4H+(aq) + 4e− → 2H2O(l)
The overall reaction is the oxidation of ethanol to acetic acid and water.
CH3CH2OH(l) + O2(g) → CH3COOH(aq) + H2O(l)
The electric current produced by this reaction is measured by a microcontroller, and displayed as an approximation of overall blood alcohol content (BAC) by the Alcosensor.
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